Hinge.



W. GARLSON.

HINGE.

APPLI OATION FILED DEO.12, 1911.

Patented May 20, 1913.

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XVI NESSQLS Attorney COLUMBIA P LANOGRAPH CO-JVASHINGTDN. D. c.

UNITED STATES WILLIAM GARLSON, or JAMESTOWN, NEW YORK.

HINGE.

Specification of Letters Patent.

Patented May 20,1913.

Application filed December 12, 1911. Serial No. 665,218.

To all whom it may concern:

Be it known that I, WILLIAM CARLSON, a citizen of the United States,residing at Jamestown, in the county of Chautauqua and State of NewYork, have invented ce rtain new and useful Improvements 1n Hinges; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to hinges, and is particularly constructed foruse in connection with the metal hinges which are used to support twogates constructed of metal tubing, and which cooperate with railingconstructed of similar material.

It is a further object of the present invention to provide a hinge whichmay be attached to the gates and railings constructed as heretoforedescribed which arenow in use.

With the above and other objects in view, this invention consists in theconstruction, combination and arrangement of parts, all as hereinaftermore fully described, claimed and illustrated in the accompanyingdrawings, wherein:

Figure 1 is a fragmentary view of a railing illustrating the gate hungthereon through the instrumentality of the spring hinges forming thesubject matter of the present invention; Fig. 2 is a central, verticalsection taken through one of the hinges; Fig. 3 is a horizontal sectiontaken along line 33 of Fig. 2; and Fig. 4 is an enlarged detailedperspective view illustrating the spring spindle and cotiperatingbushing.

Reference being had more particularly to the drawings, 10 indicatesgenerally a railing having a vertical post 11 at one terminal thereof,to which the gate 12 is hinged by means of the hinges 13 and 14.

Referring particularly to Figs. 2, 3 and 4 which constitute the detailsof the upper hinge 13, 15 constitutes a dependent section of tubingcarried by the upper rail of the railing 10, while 16 indicates theupper terminal of the central section of the post 11. In attaching thehinge forming the subject matter of the present invention to thevertical post 10, it is necessary to have the sections 15-and 16 spacedas illustrated in Fig. 2. If the hinge is being attached to a railingalready standing, it is necessary to saw or remove a section of thevertical post of the railing. A bushing 17 is mounted in the upperterminal of the tubular section 16 and is provided with a circularflange or collar 18 which bears against the upper edges of the tubularsection 16. A tubular spindle 19 rotatable in 18 and fixed in 24 ismounted concentrically on the collar 18, and is provided .withthe-longitudinal slot 20. The bushing 17 is adapted to fit snugly intothe upper terminal of the tubular section 16 and be retained fromrotation therein, as will clearly be seen in Fig. 2. A similar bushingspindle 19 by means of a socket 22 formed concentrically in saidbushing, said spindle being retained rigidly in said socket by means ofthe set screw 23. The bushing 21 carries a collar 24 which is identicalto the collar 18 and which is rigidly connected to thebushing, and bearsagainst the lower edges of the tubular section 15. From thisconstruction it will readily be seen that the space between the collars18 and 24 constitutes a housing for the spring which cooperates with thehinge for the purpose of operating the same.

A collar 25 surrounds the tubular post 16 adjacent to the upper terminalthereof, and forms a bearing for the sleeve 26 which encircles both theupper'terminal of the tubular section 16 and the lower terminal of thesection 15. This sleeve is constructed in two sections, oneinterengaging with the other, to present a smooth surface, said sectionsbeing secured together by the screws 27. One of the sections of thesleeve 26 has formed thereon an arm 28 which is secured to the verticalpost of the gate 12. The section of the sleeve 26 carrying the arm 28 isprovided with an annular depression 29 for the purpose of engaging aspring hereinafter more fully described, as the gate 12 swings in onedirection. A leaf coil spring 80 encircles the spindle 19 and is engagedby the groove 20 at its inner terminal. The outer terminal of the spring30 is pro vided with an angularly bent portion 31 which projects intothe recess 29 formed in the sleeve 26 adjacent to the arm 28. A pin 32is interposed between the collars 18 and 24 adjacent to the section ofthe sleeve 26 carrying the arm 28 and is rigidlysecured to said collar18, said pin adapted to engage the angularly bent portion 31 of thespring 30 when the gate is stationary.

21 is mounted on the upper terminal of the F rom, the foregoingdescription and by:

referring to Fig. 3 it will clearly be understood that as the gateswings in the direction of the arrow A in said figure, the terminal ofthe groove 29 willengage the angular projection 31 of the spring 30 andwind said spring forcibly about the spindle 19, thereby creatingtension. When the gate is released this tension will cause the same toreturn to its normal position, namely, until the angularly bent portion3l engages the pin 32 which will disengage the spring from itsconnection with the sleeve 26. Should the tension of the spring becomeweak, it is possible by removing the hinge and loosening the set screw23, to rotate the spindle 19 sufliciently to increase said tension,after which the set screw is again tightened. A counterpart of spindle19 is mounted on the lower hinge by which means the tension of thespring 30 permits the same to be so adjusted that the gate 12 willstop'upon a dead center.

The lower hinge 14 is the exact reverse sion of said spring is increasedor decreased by rotation of said spindle.

2. In combination with a hinge, an upper and lower tubing, a collarmounted on the lower tubing, a casing surrounding said tub- .ing,members adapted to be supported by said collar, bushings formed in theends of the tube members, a spindle mounted on the lower bushing, arecess formed in the upper bushing adapted-to' receive one end of saidspindle, a leaf spring having one of its ends attached to the spindleand a groove formed in said casing adapted to receive the other end ofsaid spring.

In testimony whereof I affix my signature in presence of two witnesses.

lVILLIAM CARLSON.

W'itnesses EDWARD CARLSON, OLOF A. OLSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. C.

